Spring+MyBatis整合配置详解-优快云博客

本文链接：https://blog.youkuaiyun.com/m0_46392265/article/details/121896840

配置pom.xml环境

<dependencies>
        <!--测试-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>
        <!--数据库连接池-->
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>
        <!--servlet jsp-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!--mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.5</version>
        </dependency>
        <!--mybatis-spring-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.2</version>
        </dependency>
        <!--spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
    </dependencies>
    <build>
        <!--解决静态资源导出问题-->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>
        <!--设置默认编码-->
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <configuration>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    
    <servlet>
        <!--配置dispatcherServlet前端控制器-->
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <!--绑定springmvc.xml配置文件，这里因为所有的配置文件都整合到了applicationContext.xml中，所以绑定applicationContext.xml-->
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:applicationContext.xml</param-value>
        </init-param>
        <!--启动级别-->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <!--处理所有的url：/
            处理所有的url包括jsp：/*-->
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!--乱码过滤-->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
</web-app>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <import resource="classpath:spring-dao.xml"/>
    <import resource="classpath:spring-service.xml"/>
    <import resource="classpath:springmvc.xml"/>
</beans>

spring-dao.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <!--关联配置文件-->
    <context:property-placeholder location="classpath:database.properties"/>
    <!--配置数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    <!--配置SqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--注入数据源-->
        <property name="dataSource" ref="dataSource"/>
        <!--绑定mybatis-->
        <property name="configLocation" value="classpath:mybatis.xml"/>
    </bean>
    <!--配置动态实现dao注入到spring中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--注入sqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!--要扫描dao的包-->
        <property name="basePackage" value="com.xxx.dao"/>
    </bean>

</beans>

spring-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <!--将所有的业务类注入spring中或使用注解，这里使用注入-->
    <bean id="studentServiceImpl" class="com.xxx.service.StudentServiceImpl">
        <property name="studentMapper" ref="studentMapper"/>
    </bean>

    <!--声明式事务-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

</beans>

springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <!--处理器映射器-->
    <!--用注解，开启注解驱动-->
    <mvc:annotation-driven/>
    <!--静态资源过滤-->
    <mvc:default-servlet-handler/>
    <!--扫描包-->
    <context:component-scan base-package="com.xxx.controller"/>
    <!--处理器适配器-->
    <!--视图解析器-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--前缀-->
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <!--后缀-->
        <property name="suffix" value=".jsp"/>
    </bean>



</beans>

mybatis.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    <!--配置数据源 交给spring-->

    <!--设置日志打印-->
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
    <!--起别名-->
    <typeAliases>
        <package name="com.xxx.pojo"/>
    </typeAliases>
</configuration>

databases.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/demo01?useSSL=true&useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=root

insert.jsp


<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>添加学生</title>
    <%--引入Bootstrap--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<form action="${pageContext.request.contextPath}/student/insertStudent" method="post">
    <div class="form-group">
        <label for="exampleInputEmail1">名称</label>
        <input type="text" name="name" class="form-control" id="exampleInputEmail1" placeholder="请输入姓名">
    </div>
    <div class="form-group">
        <label for="exampleInputPassword1">年龄</label>
        <input type="text" name="age" class="form-control" id="exampleInputPassword1" placeholder="请输入年龄">
    </div>
    <button type="submit" class="btn btn-default">添加</button>
</form>
</body>
</html>

selectAll.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>数据展示</title>
    <%--引入Bootstrap--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
    <div class="container">
        <div class="row clearfix">
            <div class="col-md-12 column">
                <div class="page-header">
                    <h1>
                        <small>显示所有数据</small>
                    </h1>
                </div>
            </div>
            <div class="row">
                <div class="col-md-4 column">
                    <%--toolAdd--%>
                    <a class="btn btn-primary" href="${pageContext.request.contextPath}/student/insert">添加学生</a>
                    <a class="btn btn-primary" href="${pageContext.request.contextPath}/student/findAll">主页</a>
                </div>
                <form class="form-inline" action="${pageContext.request.contextPath}/student/selectName" method="post">
                    <div class="form-group">
                        <samp style="color: crimson">${er}</samp>
                        <input type="text" name="name" class="form-control" id="inputPassword2" placeholder="请输入要查询的名称">
                    </div>
                    <button type="submit" class="btn btn-primary">查询</button>
                </form>
            </div>
        </div>
        <div class="row clearfix">
            <div class="col-md-12 column">
                <table class="table table-hover table-striped">
                    <thead>
                    <tr>
                        <th>学号</th>
                        <th>名称</th>
                        <th>年龄</th>
                        <th>操作</th>
                    </tr>
                    </thead>
                    <%--从数据库中查询书来，从all中遍历出来--%>
                    <tbody>
                    <c:forEach var="student" items="${list}">
                        <tr>
                            <td>${student.id}</td>
                            <td>${student.name}</td>
                            <td>${student.age}</td>
                            <td>
                                <a href="${pageContext.request.contextPath}/student/updateStudent?id=${student.id}">修改</a>
                                &nbsp; &nbsp; | &nbsp;&nbsp;
                                <a href="${pageContext.request.contextPath}/student/deleteStudent?id=${student.id}">删除</a>
                            </td>
                        </tr>
                    </c:forEach>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</body>
</html>

update.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改学生信息</title>
    <%--引入Bootstrap--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<form action="${pageContext.request.contextPath}/student/update" method="post">
    <input type="hidden" name="id" value="${student.id}">
    <div class="form-group">
        <label for="exampleInputEmail1">名称</label>
        <input type="text" name="name" value="${student.name}" class="form-control" id="exampleInputEmail1" placeholder="请输入姓名">
    </div>
    <div class="form-group">
        <label for="exampleInputPassword1">年龄</label>
        <input type="text" name="age" value="${student.age}" class="form-control" id="exampleInputPassword1" placeholder="请输入年龄">
    </div>
    <button type="submit" class="btn btn-default">修改</button>
</form>
</body>
</html>

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>$Title$</title>
  </head>
  <body>
  <a href="${pageContext.request.contextPath}/student/findAll">点击进入</a>
  </body>
</html>

dao层

package com.xxx.dao;

import com.xxx.pojo.Student;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface StudentMapper {
    //查询所有学生
    List<Student> findAll();

    //查询一个学生
    Student findOne(@Param("id") int id);

    //添加学生
    int insert(Student student);

    //修改学生信息
    int update(Student student);

    //删除学生
    int delete(@Param("id") int id);

    //根据学生姓名获取信息
    Student select(@Param("name") String name);
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xxx.dao.StudentMapper">
    <select id="findAll" resultType="student">
        select * from student
    </select>

    <select id="findOne" resultType="student">
        select * from student where id=#{id}
    </select>

    <insert id="insert" parameterType="student">
        insert into student(name,age) value(#{name},#{age})
    </insert>

    <delete id="delete" parameterType="int">
        delete from student where id=#{id}
    </delete>

    <update id="update" parameterType="student">
        update student set name=#{name},age=#{age} where id=#{id}
    </update>

    <select id="select" resultType="student" parameterType="String">
        select * from student where name=#{name}
    </select>
</mapper>

service层

package com.xxx.service;

import com.xxx.pojo.Student;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface StudentService {
    //查询所有学生
    List<Student> findAll();

    //查询一个学生
    Student findOne(int id);

    //添加学生
    int insert(Student student);

    //修改学生信息
    int update(Student student);

    //删除学生
    int delete(int id);

    //根据学生姓名获取信息
    Student select(String name);
}


package com.xxx.service;

import com.xxx.dao.StudentMapper;
import com.xxx.pojo.Student;

import java.util.List;

public class StudentServiceImpl implements StudentService {
    private StudentMapper studentMapper;

    public void setStudentMapper(StudentMapper studentMapper) {
        this.studentMapper = studentMapper;
    }

    public List<Student> findAll() {
        return studentMapper.findAll();
    }

    public Student findOne(int id) {
        return studentMapper.findOne(id);
    }

    public int insert(Student student) {
        return studentMapper.insert(student);
    }

    public int update(Student student) {
        return studentMapper.update(student);
    }

    public int delete(int id) {
        return studentMapper.delete(id);
    }

    public Student select(String name) {
        return studentMapper.select(name);
    }
}

controller层

package com.xxx.controller;

import com.xxx.pojo.Student;
import com.xxx.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.ArrayList;
import java.util.List;

@Controller
@RequestMapping("/student")
public class TestController {
    @Autowired
    @Qualifier("studentServiceImpl")
    private StudentService studentService;

    //查询所有学生
    @RequestMapping("/findAll")
    public String findAll(Model model){
        List<Student> list = studentService.findAll();
        model.addAttribute("list",list);
        return "selectAll";
    }

    //跳转到添加页面
    @RequestMapping("/insert")
    public String insert(){
        return "insert";
    }

    //添加学生，@RequestMapping("/insertStudent")不能出现相同
    @RequestMapping("/insertStudent")
    public String insert(Student student){
        studentService.insert(student);
        return "redirect:/student/findAll";
    }

    //删除学生
    @RequestMapping("/deleteStudent")
    public String delete(int id){
        studentService.delete(id);
        return "redirect:/student/findAll";
    }

    //跳转到修改页面
    @RequestMapping("/updateStudent")
    public String update(int id,Model model){
        Student student = studentService.findOne(id);
        model.addAttribute("student",student);
        return "update";
    }

    //修改数据
    @RequestMapping("/update")
    public String update(Student student){
        studentService.update(student);
        return "redirect:/student/findAll";
    }

    //通过姓名获取数据
    @RequestMapping("/selectName")
    public String select(String name,Model model){
        Student student = studentService.select(name);
        List<Student> list=new ArrayList<Student>();
        list.add(student);
        if (student==null){
            list=studentService.findAll();
            model.addAttribute("er","未查到");
        }
        model.addAttribute("list",list);
        return "selectAll";
    }

}

pojo层

package com.xxx.pojo;

public class Student {
    private int id;
    private String name;
    private int age;

    public Student() {
    }

    public Student(int id, String name, int age) {
        this.id = id;
        this.name = name;
        this.age = age;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

SSM基础整合